Va. Code § 28.2-109
As used in this article, unless the context requires a different meaning:
"Ballast water" means any water or matter taken on board a vessel to control or maintain trim, draft, stability or stresses of the vessel, without regard to the manner in which it is carried.
"Commercial vessel" means a self-propelled ship in commerce of 300 gross tons or more. The term "commercial vessel" does not include a vessel of the United States Department of Defense or United States Coast Guard subject to the requirements of § 1103 of the National Invasive Species Act of 1996, or any vessel of the Armed Forces, as defined in 33 U.S.C. § 1322 (a)(14), that is subject to the uniform national discharge standards for vessels of the Armed Forces under 33 U.S.C. § 1322 (n).
"Federal guidelines" means the provisions of 33 C.F.R. Part 151, Subpart D, "Ballast Water Management for Control of Nonindigenous Species in Waters of the United States."
"Operator" means any person who owns, operates, charters, rents or otherwise exercises control over or responsibility for a vessel.
Va. Code § 28.2-109